Insulation Resistance Test Format

Maintenance insulation resistance testing can be performed on a regular basis and the collected data used to indicate if the conductor insulation is deteriorating over time.

Insulation resistance test format.

This type of test is a form of preventative maintenance. The insulation resistance test is the second test required by the electrical safety testing standards. Test instrument serial no s scm ref no. Insulation resistance testing purpose.

The insulation resistance test consists in measuring the insulation resistance of a. Developed early in the 20th century the insulation resistance ir test is the oldest and most widely used test for assessing the quality of insulation. Contuinity test ohms insulation resistance test mohms polarity. The insulation resistance test is the second test required by the electrical safety testing standards.

Because electrical insulation will exhibit dynamic behavior during the course of your test. Ct resistance excitation curve ratio polarity test. With a little record keeping and common sense however you can get a good picture of the insulation condition from values that are only relative. The insulation resistance test consists in measuring the insulation resistance of a device under test while phase and neutral are short circuited together.

The megger insulation tester is a small portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. The test measures the insu lation resistance between the phases and or between phase and ground. Whether the dielectric is good or bad to evaluate a number of test results on the same piece of equipment you have to conduct the test the same way and under the. At a the insulation resistance decreases due to aging and dust accumulation.

Insulation resistance test. Use megger mit1020 to measure insulation resistance. Cpc 100 for vt ratio polarity test. When performing insulation resistance testing you must maintain consistency.

Insulation resistance decreases in temperature or moisture. It is commonly used in the industry for acceptance testing prior to energizing the cable and for maintenance testing programs. Current transformer loop test. Insulation resistance testing is a non destructive test procedure.

Z 5 date of test r eading in megohms the graph below shows an example of the insulation resistance readings on an electric motor.